Check if textbox.text exist in array

Question

Here i have my simple code, containt list of arrays and 2 text boxes, when i press button script must check if text form Textbox2 is found in list of array. Can you help me to fix it ? Thanks !

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Dim pins() As String = {"dgge", "wada", "caas", "reaa"}
    If TextBox2.Text = pins() Then
        TextBox1.Text = "Succes"
    End If End Sub

`If pins.IndexOf(textBox2.Text) <> -1 Then ... End If` (assuming I remember VB correctly.) p.s. See also: http://stackoverflow.com/a/11112305/298053 — Brad Christie, Feb 22 '13 at 20:16

score 1 · Accepted Answer · answered Feb 22 '13 at 20:21

If you want to use LINQ, you can just do this:

If pins.Contains(TextBox2.Text) Then
    TextBox1.Text = "Success"
End If

Otherwise, the easiest option would be to use a List instead of an array:

Dim pins As New List(Of String)(New String() {"dgge", "wada", "caas", "reaa"})
If pins.Contains(TextBox2.Text) Then
    TextBox1.Text = "Success"
End If

But, if you must use an array, you can use the IndexOf method in the Array class:

If Array.IndexOf(TextBox2.Text) >=0 Then
    TextBox1.Text = "Success"
End If

score 0 · Answer 2 · answered Feb 22 '13 at 20:19

0

If Array.IndexOf(pins, TextBox2.Text) <> -1 Then
    TextBox1.Text = "Succes"
End If End Sub

answered Feb 22 '13 at 20:19

MarcinJuraszek

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score 0 · Answer 3 · answered Feb 22 '13 at 20:19

0

If pins.IndexOf(TextBox2.Text) >= 0 Then
    TextBox1.Text = "Founded"
End If

Or if you use List(Of String) instead of array:

If pins.Contains(TextBox2.Text) Then
    TextBox1.Text = "Founded"
End If

answered Feb 22 '13 at 20:19

SysDragon

9,692
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Check if textbox.text exist in array

3 Answers3